python return largest number in array code example

Example: form largest number from array in pyhton

1234567891011121314151617181920212223242526class Num:    def __init__(self, v):        self.val = str(v)     def __lt__(self, other):        return self.val + other.val < other.val + self.valclass Solution:        def largestNumber(self, A):        num_list = []        for i in A:            num_list.append(Num(i))        num_list.sort(reverse=True)         output = []        for i in num_list:            output.append(i.val)         if output[0][0] == '0':            output = ['0']         return(''.join(output))                XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX